Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9223245 | Developing device to form a uniform developer layer on a developing member and electrophotographic image forming apparatus using the same | Mitsuru Oikawa, Sang Don Lee | 2015-12-29 |
| 8620178 | Developing cartridge and image forming apparatus employing the same | Yong Sung Kim | 2013-12-31 |
| 8126370 | Developing unit and image forming apparatus having the same | Woong-Yong Choi | 2012-02-28 |
| 8050596 | Developer cartridge with deformable member, and image forming apparatus having the same | — | 2011-11-01 |
| 7822366 | Image forming apparatus and developing unit thereof | In-cheol Jeon | 2010-10-26 |
| 7650097 | Slide shutter and toner supplying apparatus having the same | Hyung-won Yoon | 2010-01-19 |